40444091 has 2 divisors, whose sum is σ = 40444092. Its totient is φ = 40444090.

The previous prime is 40444031. The next prime is 40444099. The reversal of 40444091 is 19044404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40444091 - 2¹⁴ = 40427707 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40444091.

It is not a weakly prime, because it can be changed into another prime (40444099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222045 + 20222046.

It is an arithmetic number, because the mean of its divisors is an integer number (20222046).

Almost surely, 2^40444091 is an apocalyptic number.

40444091 is a deficient number, since it is larger than the sum of its proper divisors (1).

40444091 is an equidigital number, since it uses as much as digits as its factorization.

40444091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40444091 is about 6359.5668877684. The cubic root of 40444091 is about 343.2561757262.

Adding to 40444091 its reverse (19044404), we get a palindrome (59488495).

The spelling of 40444091 in words is "forty million, four hundred forty-four thousand, ninety-one".